9C.7 ASSESSMENT of the IMPACT of INCREASED LEAD TIME for TROPICAL CYCLONE WATCHES/WARNINGS in the NORTH CENTRAL PACIFIC Samu
9C.7 ASSESSMENT OF THE IMPACT OF INCREASED LEAD TIME FOR TROPICAL CYCLONE WATCHES/WARNINGS IN THE NORTH CENTRAL PACIFIC Samuel Houston* and Richard Knabb Central Pacific Hurricane Center / NWS / NOAA, Honolulu Hawaii Mark DeMaria and Andrea Schumacher Cooperative Institute for Research in the Atmosphere / NOAA, Ft. Collins, Colorado 1. INTRODUCTION This work is part of a broader effort in the National Weather Service (NWS) to The lead times for watches and develop objective guidance for the issuance warnings for tropical storms and hurricanes of TC watches and warnings that are based were increased to 48 and 36 hours, on the TC wind speed probabilities. It is also respectively, for the central North Pacific in hoped that the result of these assessments 2009. This extra lead time was implemented will be useful to other TC forecast centers to provide additional preparation time for around the world, especially in areas with emergency managers, media, and the small, isolated islands for which they have public, especially in the main Hawaiian warning responsibility. Islands, if tropical storm or hurricane winds were forecast to impact any land areas in This presentation will summarize the the area of responsibility (AOR) of the impacts of the new tropical cyclone watch Central Pacific Hurricane Center (CPHC). and warning lead times on CPHC operations during 2009. Also, we will show a few Hurricanes Felicia and Neki, which examples of some significant historical occurred in the central North Pacific during central North Pacific hurricanes (e.g., Iwa of 2009, required the issuance of TC watches. 1982, Iniki of 1992, Emilia of 1994, Daniel of Neki also required a hurricane warning 2000, Ioke of 2006, and Flossie of 2007) before it impacted some of the small islands might have been handled if they occurred which are part of the Papahānaumokuākea with the longer lead times and the benefit of Marine National Monument (PMNP), the wind speed probability products.
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